1977 Chevrolet Custom Deluxe ac problem

1977 CHEVROLET CUSTOM DELUXE
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JAMES 23
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1977 chevy c 10 305 engine. Brand new compressor on it evacuated the system and put a vaccum on it for about 45 mins. By the way i oiled the compressor before puttin it on. Recharged the system with 134a and did use retrofittings. No leaks but still blows hot air out of vents
Jul 22, 2015 at 6:56 AM
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HMAC300
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how much did you put in? it should only take about t80% of what the R12 charge is supposed to be. what are your pressures? is the water valve shut? Is the large AC line cold or frosty/sweating?
Jul 22, 2015 at 3:10 PM
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JAMES 23
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Put 3 12 oz cans the pressure when checked on low side was pretty high and no the large line was not sweating. The accumalator did for a brief moment and even got cold but quickly dissipated
Jul 22, 2015 at 7:26 PM
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HMAC300
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what are the pressures and what was installed was it R12 or a similar product? it should be 30 psi or around there at about 1500 rpm.
Jul 23, 2015 at 5:49 AM
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JAMES 23
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I installed 134a in the system and i will check the pressure today on my lunch break.
Jul 23, 2015 at 6:34 AM